A disease from Hidan No Aria, Hysteria Mode (Hysteria Savant Syndrome or HSS) is a trait which causes the bodies of those carrying it to activate 30 times more neural transmitters than the average person, which makes the function of his central nervous system, namely the cerebrum, cerebellum, and spinal cord, accelerate dramatically when he is sexually excited.
As a result, in Hysteria Mode, logical thinking, judgment and reflexes all rise exponentially. Users enter a temporary super mode, like a transformation. It is seen in the novel that Hysteria Mode also permits the user to develop a sixth sense.
"Collin has a lolita complex, so when he sees a little girl in danger, his Hysteria Savant Syndrome activates